The dyno testing I did when I was developing my fast motors does not agree with there's whatsoever. 612 versus 588 horse, and 795 vs 762 horsepower. Nicks Hemi seemed to stumbled at the top end of the pull with the manifolds. I wonder if something was going away, or if the jetting was off?
Bringing this back from the dead.
The 612 vs 588 horsepower, was that on as-cast or ported manifolds? Trying to decide between headers and porting my manifolds.
